As the temperature and acidity
of a test tank climb,
diatoms that dominate the cold northern oceans fall
off steeply in number — an ominous sign, given that they currently support by far the richest fisheries in the world.
report that ocean sediment cores containing an «undisturbed history
of the past» have been analyzed for variations in PP over timescales that include the Little Ice Age... they determined that during the LIA the ocean
off Peru had «low PP,
diatoms and fish,» but that «at the end
of the LIA, this condition changed abruptly to the low subsurface oxygen, eutrophic upwelling ecosystem that today produces more fish than any region
of the world's oceans... write that «in coastal environments, PP,
diatoms and fish and their associated predators are predicted to decrease and the microbial food web to increase under global warming scenarios,» citing Ito et al..